Content behind CoordinatorLayout AppBarLayout

问题

I was creating a settings activity/layout for my app. I have a CoordinatorLayout with an AppBarLayout and Toolbar, then beneath that it includes content_settings.xml. When the content loads the .xml file is behind the app bar.

I'm using this same setup to load the main content and it works fine, but for some reason isn't rendering correctly within the Settings section.

activity_settings.xml

<android.support.design.widget.AppBarLayout
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:theme="@style/AppTheme.AppBarOverlay">

    <android.support.v7.widget.Toolbar
        android:id="@+id/toolbar"
        android:layout_width="match_parent"
        android:layout_height="?attr/actionBarSize"
        android:background="?attr/colorPrimary"
        app:popupTheme="@style/AppTheme.PopupOverlay" />

</android.support.design.widget.AppBarLayout>

<include layout="@layout/content_setting" />

The content_settings.xml is just a FrameLayout that is replaced by a PreferenceFragment

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:id="@+id/settings_container"
    android:layout_width="match_parent"
    android:layout_height="match_parent" />

回答1:

add this to your Recyclerview :

app:layout_behavior="@string/appbar_scrolling_view_behavior"

回答2:

In my case the view under the toolbar wasn't scrollable so even though the accepted answer did stop the overlapping it pushed the content down by the height of the toolbar, pushing elements offscreen. The solution in this case was to also remove the

app:layout_scrollFlags

from the Toolbar that I was including/sharing with other layouts that had scrolling views.

来源：https://stackoverflow.com/questions/32855889/content-behind-coordinatorlayout-appbarlayout